Quarterly Groundwater Monitoring Report Third Quarter 2018

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1 Quarterly Groundwater Monitoring Report Third Quarter 2018 Piper s Wine & Spirit Barn 4127 Hanover Pike Manchester, Maryland MDE Case No CL Facility I.D. No AEC Project No Prepared for: Chenoweth & Associates, Inc Hanover Pike Manchester, Maryland and Maryland Department of the Environment Oil Control Program 1800 Washington Boulevard Baltimore, Maryland Prepared by: Advantage Environmental Consultants, LLC 8610 Washington Boulevard, Suite 217 Jessup, Maryland Phone (301) Fax (301) October 11, 2018 Denver CO Nashville TN Philadelphia PA Richmond VA San Diego CA Washington DC

2 October 11, 2018 Mr. William A. Chenoweth Chenoweth & Associates, Inc Hanover Pike Manchester, Maryland Subject: Quarterly Groundwater Monitoring Report Piper s Wine & Spirit Barn 4127 Hanover Pike Manchester, Maryland MDE Case No CL Facility I.D. No AEC Project No Dear Mr. Chenoweth: On September 27 th, 2018, Advantage Environmental Consultants, LLC (AEC) completed sampling of three onsite groundwater monitoring wells, four tank field monitoring pipes, and the on-site potable drinking water well. This report includes AEC s discussion of the scope of work, methodologies, analytical results, findings and conclusions. We appreciate the opportunity to be of service to Chenoweth & Associates, Inc. If you should have any questions regarding this report, or if we can be of further assistance, please contact the undersigned at (301) Sincerely, ADVANTAGE ENVIRONMENTAL CONSULTANTS, LLC Jeremy S. Sheidy Senior Project Manager Jeffery S. Stein, P.G. Principal cc: Mr. Matt Mueller, Maryland Department of the Environment

3 AEC Project No MDE Case No CL Piper s Wine & Spirit Barn Page 2 Regulatory Information Regulatory Agency: Maryland Department of the Environment Agency Contact: Matthew Mueller Facility I.D. Number: MDE Case Number: CL Current Case Status: Quarterly monitoring well, potable well, and tank field monitoring pipe sampling Reporting Period: to General Site Information Site Contact: William A. Chenoweth Consultant Contact: Jeremy S. Sheidy Facility Status: Operating fuel station Area Property Use: See Site Vicinity Map and Site Plan (Figures 1 and 2 in Attachment A) Monitoring Wells: MW-1, MW-2, MW-3 Tank Field Monitoring Pipes: TP-1, TP-2, TP-3, TP-4 Activities Completed this Period Sampling Date: September 27, 2018 Wells Sampled: MW-1, MW-2, MW-3, TP-1, TP-2, TP-3, TP-4, and onsite potable well LNAPL Present: No Attachments Attachment A Attachment B Figures Figure 1 Figure 2 Figure 3 Figure 4 Tables Table 1 Table 2 Site Vicinity Map Site Plan Groundwater Gradient Map Groundwater Quality Map Historical Groundwater Elevation Data Historical Groundwater Analytical Results Attachment C Attachment D Laboratory Analytical Report and Chain-of-Custody Form Water Sampler Certification

4 AEC Project No MDE Case No CL Piper s Wine & Spirit Barn Page 3 Introduction Advantage Environmental Consultants, LLC (AEC) has completed sampling of three onsite groundwater monitoring wells, four tank field monitoring pipes, and the on-site potable well (PW). All samples were collected on September 27, Figure 1 in Attachment A illustrates the site vicinity. Figure 2 in Attachment A illustrates the groundwater monitoring wells, tank field monitoring pipes, and onsite potable drinking water well locations. The following is a description of this work and the results of the recent groundwater sampling effort. Groundwater Gauging, Sampling, and Analysis Monitoring Wells Groundwater samples were collected from the monitoring wells and tank field monitoring pipes by first gauging and then purging at least three well volumes using a polyvinyl chloride (PVC) bailer, which was cleaned prior to use in each well using a Liquinox detergent. After purging, each well was allowed to recharge for a period of at least one hour prior to sampling. The groundwater samples were collected using dedicated disposable high density polyethylene (HDPE) sampling bailers. The groundwater flow direction for the monitoring wells on the day of the sampling event is depicted in Figure 3 in Attachment A. Table 1 in Attachment B provides current and historical groundwater elevation data. The samples were transferred directly into the appropriate sample containers. The sample from each location was placed in 40-milliliter glass vials with Teflon-lined septa and/or one-liter amber glass jars. The sample containers were preserved with hydrochloric acid, as appropriate. Once collected, the samples were placed on ice in a cooler to await shipment to the laboratory. The groundwater monitoring well and tank field monitoring pipe samples were analyzed for volatile organic compounds (VOCs) including fuel oxygenates per Environmental Protection Agency (EPA) Analytical Method 8260, total petroleum hydrocarbons (TPH) diesel range organics (DRO) and TPH gasoline range organics (GRO) per EPA Analytical Method 8015B. The results of laboratory analysis indicated that no analytes were detected above laboratory quantitation limits in samples MW-1, MW-2, and MW-3. Laboratory analytical results for sample TP-1 indicated detectable concentrations of TPH GRO and TPH DRO above their respective Generic Numeric Cleanup Standards for Type I and II Aquifers (Regulatory Standards). Laboratory analytical results show detectable concentrations of tert-amyl alcohol (TAA), diisopropyl ether (DIPE), MTBE, o-xylene, and m- & p-xylenes. All other analytes were below laboratory quantitation limits (BQL).

5 AEC Project No MDE Case No CL Piper s Wine & Spirit Barn Page 4 Laboratory analytical results for sample TP-2 show a detectable concentration of TPH DRO above Regulatory Standards. All other analytes were BQL. Laboratory analytical results for sample TP-3 show a detectable concentration of TPH DRO above Regulatory Standards. All other analytes were BQL. Laboratory analytical results for sample TP-4 show detectable concentrations of benzene, MTBE, TPH GRO and TPH DRO above Regulatory Standards. Laboratory analytical results show detectable concentrations of TAA, tert-amyl methyl ether (TAME), tert-butanol (TBA), DIPE, ethylbenzene, naphthalene, toluene, 1,2,4-Trimethylbenzene, 1,3,5-trimethylbenzene, o-xylene, and m- & p- Xylenes. All other analytes were BQL. A Groundwater Quality Map is presented as Figure 4 in Attachment A. Table 2 in Attachment B summarizes the current and historical groundwater analytical results. Laboratory analytical reports and chain-of-custody documentation are included as Attachment C. On-Site Potable Well Treatment System A sample from the on-site potable well was collected from an exterior spigot. The sample was obtained after purging the system for 15 minutes. The sample was placed in 40 milliliter glass vials with Teflon-lined septa and preserved with hydrochloric acid, as appropriate. Once collected, the samples were placed on ice in a cooler to await shipment to the laboratory. The samples were analyzed for VOCs including fuel oxygenates per EPA Analytical Method The sampling was conducted by MDE certified AEC staff scientist Brian Taetzsch (sampler ID 6403BT). Water Sampler Certification is included as Attachment D. Laboratory analytical results for the on-site potable well show that all analytes were BQL. Tank Field Monitoring Pipe Evaluation AEC performed an evaluation of the tank field monitoring pipes by screening each with a photoionization detector (PID) for the presence of petroleum hydrocarbon vapors. A plastic covering was securely fastened over each tank field monitoring pipe and was allowed to sit for a period of fifteen minutes. The plastic barrier was then punctured with the PID nozzle, and a reading was taken. A PID reading of 39.0 ppm was detected in TP-1 and a petroleum odor was noted. No readings above 0.0 parts per million (ppm) were detected in TP-2, TP-3, and TP-4. The tank field monitoring pipes were gauged to determine the depth to water, and the presence of light non-aqueous phase liquid (LNAPL). No LNAPL was detected in any of the tank field monitoring pipes.

6 Attachment A

Site 8610 Washington Boulevard, Suite 217 Jessup, Maryland 20794 Phone: 301-776-0500 Fax: 301-776-1123 N 14-059 Figure 1 - Site

7 Site 8610 Washington Boulevard, Suite 217 Jessup, Maryland Phone: Fax: N Figure 1 - Site Vicinity Map Pipers Wine & Spirit Barn 4127 Hanover Pike Manchester, Maryland AEC Project No.: Report Date: Drawn By: BGT October 2018

8 MW-3 TP-4 TP-1 MW-2 MW-1 TP-3 TP Washington Boulevard, Suite 217 Jessup, Maryland Phone: Fax: Legend: = Monitoring Well = Tank Field Monitoring Well = Potable Well Figure 2 - Site Plan Pipers Wine & Spirit Barn 4127 Hanover Pike Manchester, Maryland AEC Project No.: Report Date: Drawn By: October 2018 BGT

9 MW MW MW Washington Boulevard, Suite 217 Jessup, Maryland Phone: Fax: Legend: = Monitoring Well = Potable Well = Groundwater Contour = Groundwater Flow Direction Figure 3 Groundwater Gradient Map Pipers Wine & Spirit Barn 4127 Hanover Pike Manchester, Maryland AEC Project No.: Report Date: Drawn By: October 2018 BGT

Groundwater Samples Collected 9/27/2018 Samples analyzed for VOCs per EPA 8260 plus oxygenates TPH GRO/DRO per EPA 8015 VOCs in ug/l or ppb TPH GRO/DRO in mg/l or ppm <2.

10 Groundwater Samples Collected 9/27/2018 Samples analyzed for VOCs per EPA 8260 plus oxygenates TPH GRO/DRO per EPA 8015 VOCs in ug/l or ppb TPH GRO/DRO in mg/l or ppm <2.0 denotes an analyte not detected above the laboratory quantitation limit (limit of quantitation shown) Benzene/MTBE/GRO/DRO Bold denotes a value above the MDE Regulatory Standard MW-3 <2.0/<2.0/<0.100/<0.19 TP /22.7/0.561/0.53 TP-1 <2.0/2.3/0.249/0.50 TP-3 <2.0/<2.0/<0.100/1.52 MW-2 <2.0/<2.0/<0.100/<0.19 MW-1 <2.0/<2.0/<0.100/<0.20 TP-2 <2.0/<2.0/<0.100/ Washington Boulevard, Suite 217 Jessup, Maryland Phone: Fax: Legend: = Monitoring Well =Tank Field Monitoring Well = Potable Well Figure 4 Groundwater Quality Map Pipers Wine & Spirit Barn 4127 Hanover Pike Manchester, Maryland AEC Project No.: Report Date: Drawn By: October 2018 BGT

11 Attachment B

12 Table 1 - Well Gauging Summary Piper's Wine & Spirit Barn 4127 Hanover Pike, Manchester, Maryland Well ID Date Depth to Water Depth to LPH TOC Elevation Water Elevation LPH Elevation Corrected Water Elevation LPH Thickness MW-1 5/16/ ND NM NM /28/ ND NM NM /22/ ND NM NM /17/ ND NM NM /9/ ND NM NM /16/ ND NM NM /29/ ND NM NM /26/ ND NM NM /27/ ND NM NM 0.00 MW-2 5/16/ ND NM NM /28/ ND NM NM /22/ ND NM NM /17/ ND NM NM /9/ ND NM NM /16/ ND NM NM /29/ ND NM NM /26/ ND NM NM /27/ ND NM NM 0.00 MW-3 5/16/ ND NM NM /28/ ND NM NM /22/ ND NM NM /17/ ND NM NM /9/ ND NM NM /16/ ND NM NM /29/ ND NM NM /26/ ND NM NM /27/ ND NM NM 0.00 TP-1 6/26/ ND NM NM NM NM /27/ ND NM NM NM NM 0.00 TP-2 6/26/ ND NM NM NM NM /27/ ND NM NM NM NM 0.00 TP-3 6/26/ ND NM NM NM NM /27/ ND NM NM NM NM 0.00 TP-4 6/26/ ND NM NM NM NM /27/ ND NM NM NM NM 0.00 All measurements in feet LPH = Liquid Phase Hydrocarbon TOC = Top of Casing ND = None Detected NA = Not Applicable NG = Not Gauged NM = Not Measured

13 Well No. Date B T E X Naphthalene MTBE TPH GRO TPH DRO MW-1 5/16/2013 <5.0 <5.0 <5.0 <10.0 <5.0 <5.0 NS NS 3/28/2014 <5.0 <5.0 <5.0 <10.0 <5.0 <5.0 NS NS 4/22/2015 <2.0 <2.0 <2.0 <4.0 <2.0 <2.0 NS NS 3/17/2016 <2.0 <2.0 <2.0 <4.0 <2.0 <2.0 NS NS 3/9/2017 <2.0 <2.0 <2.0 <4.0 <2.0 <2.0 NS NS 3/16/2018 <2.0 <2.0 <2.0 <4.0 <2.0 <2.0 NS NS 6/26/2018 <2.0 <2.0 <2.0 <4.0 <2.0 <2.0 <0.100 <0.19 9/27/2018 <2.0 <2.0 <2.0 <4.0 <2.0 <2.0 <0.100 <0.20 MW-2 5/16/2013 <5.0 <5.0 <5.0 <10.0 <5.0 <5.0 NS NS 3/28/2014 <5.0 <5.0 <5.0 <10.0 <5.0 <5.0 NS NS 4/22/2015 <2.0 <2.0 <2.0 <4.0 <2.0 <2.0 NS NS 3/17/2016 <2.0 <2.0 <2.0 <4.0 <2.0 <2.0 NS NS 3/9/2017 <2.0 <2.0 <2.0 <4.0 <2.0 <2.0 NS NS 3/16/2018 <2.0 <2.0 <2.0 <4.0 <2.0 <2.0 NS NS 6/26/2018 <2.0 <2.0 <2.0 <4.0 <2.0 <2.0 <0.100 <0.19 9/27/2018 <2.0 <2.0 <2.0 <4.0 <2.0 <2.0 <0.100 <0.19 MW-3 5/16/2013 <5.0 <5.0 <5.0 <10.0 <5.0 <5.0 NS NS 3/28/2014 <5.0 <5.0 <5.0 <10.0 <5.0 <5.0 NS NS 4/22/2015 <2.0 <2.0 <2.0 <4.0 <2.0 <2.0 NS NS 3/17/2016 <2.0 <2.0 <2.0 <4.0 <2.0 <2.0 NS NS 3/9/2017 <2.0 <2.0 <2.0 <4.0 <2.0 <2.0 NS NS 3/16/ <2.0 <2.0 <4.0 < NS NS 3/29/ <2.0 <2.0 <4.0 < NS NS 6/26/2018 <2.0 <2.0 <2.0 <4.0 < <0.100 <0.19 9/27/2018 <2.0 <2.0 <2.0 <4.0 <2.0 <2.0 <0.100 <0.19 TFMP-1 6/26/ < < /27/2018 <2.0 <2.0 < < TFMP-2 6/26/2018 <2.0 <2.0 <2.0 <4.0 <2.0 <2.0 < /27/2018 <2.0 <2.0 <2.0 <4.0 <2.0 <2.0 < TFMP-3 6/26/2018 <2.0 <2.0 <2.0 <4.0 <2.0 <2.0 < /27/2018 <2.0 <2.0 <2.0 <4.0 <2.0 <2.0 < TFMP-4 6/26/ < /27/ Type I and II Aquifers 5 1, , BTEX, MTBE, and naphthalene results in parts per billion or ug/l TPH DRO/GRO results in parts per million or mg/l <5.0 = Analyte was not detected above the laboratory limit of quantitation (limit of quantitation shown) B = Benzene; T = Toluene; E = Ethylbenzene; X = Xylene MTBE = Methyl tert butyl ether TPH DRO = total petroleum hydrocarbons diesel range organics TPH GRO = total petroleum hydrocarbons gasoline range organics Bold indicates concentrations above MDE Standards Table 2 - Groundwater Analytical Results Piper's Wine & Spirit Barn 4127 Hanover Pike, Manchester, Maryland Some compounds may have been detected but are not tabulated on this spreadsheet. See laboratory analytical results reports for full results. MDE Standards (Generic Numeric Cleanup Standards for Groundwater and Soil - Interim Final Guidance Update No June 2008)

14 Attachment C

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31 Attachment D

AECOM tel 8000 Virginia Manor Road Suite fax Beltsville, Maryland 20705

AECOM tel 8000 Virginia Manor Road Suite fax Beltsville, Maryland 20705 AECOM 0..00 tel 000 Virginia Manor Road Suite 0..0 fax Beltsville, Maryland 00 October, 0 Mr. Matt Mueller AECOM Project #: 0 Maryland Department of Environment Oil Control Program 00 Washington Blvd.